Jay-Z is a highly recognized artist in rap music who has worked to become the number one rapper in New York City for a long time. His 1996 debut album Reasonable Doubt sold millions and set off his long line of hit singles that would receive extensive recognition on radio and television. He built up a solid fan base and challenged other rappers, including Nas. He started Roc-A-Fella Records in 1996, a label that made a lasting influence on the hip hop and started many trends from the 90s to the 2000s. He worked with the most well-known producers of the day like Teddy Riley and Timbaland and collaborated with the most successful rappers like DMX, Notorious B.I.G., and Snoop Dogg. He announced his retirement from rapping in 2003 and became the president of Def Jam label. He came out of retirement in 2005 in order to perform in the I Declare War concert alongside Kanye West, Diddy, and T.I. He left retirement for good and released Kingdom Come in 2006. He released another album American Gangster the next year, then released Blueprint 3, the third album in the Blueprint series. The latter album featured collaborations with Rihanna, West, and Alicia Keys. The Hits Collection, Vol. 1 was released in 2010.